> Thus, MSS clamping should not be tied to NAT.

Ok, maybe not. I'm probably biased as I myself only need it on NAT routers.

Furthermore I believe routers never should touch anything beyound the IP
header. NAT already breaks this law.

If the majority here believes otherwise I'll move the clamping over to
the ip_output proper and add a "mssclamp" option to route(8), similar to the
-mtu option.


Martin